稀释剂对燃烧合成ZrN的影响  

Effect of the Diluent on the Combustion Synthesis of ZrN

作　　者：康新婷[1] 蒋纪麟[1] 刘素英[1] 

机构地区：[1]西北有色金属研究院

出　　处：《稀有金属材料与工程》1997年第6期47-51,共5页Rare Metal Materials and Engineering

摘　　要：探讨了一种新型的燃烧合成ＺｒＮ的工艺，该工艺的特点是用ＺｒＨ２作原料，在低压氮气下进行ＺｒＮ的燃烧合成。并讨论了其脱氢氮化机理，探索了产物相稀释剂对合成过程、产物相及产物形貌的影响。结果表明：在低压氮气下，用ＺｒＨ２燃烧合成ＺｒＮ的工艺是可行的。当产物相稀释剂的添加量为２０％～２５％，粒度与原料粒度接近时，其转化率最高，且颗粒的形貌合成前后没有改变。A new type of combustion process for the synthesis of ZrN has been developed The ZrN was sythesized under a low pressure of nitrogen, using ZrH2 as starting material instead of pure Zr or ZrO2 The effects of diluent on the combustion process, products, and particle morphology are studied in detail The mechanisms of dehydrogenation and nitridation are also discussed When the amount of diluent is in the range of 20% to 25% and the particle size of the diluent is approximately equal to that of primary ZrH2 powder, the conversion ratio of ZrH2 to ZrN is the highest Using this new type of combustion process to synthesize ZrN, the amount of diluent can be reduced by 25% and the ZrN particles retain the same morphology and lamellar structure as the ZrH2 particles

关 键 词：燃烧合成 氮化锆 氢化铝 稀释剂 

分 类 号：TQ134.12[化学工程—无机化工]